<template>
  <div>
    <el-row
      type="flex"
      justify="end"
    >

      <el-select
        v-model="currentYear"
        style="margin-right:20px"
        @change="dateChange"
      >
        <el-option
          v-for="item in yearList"
          :key="item"
          :label="item"
          :value="item"
        />
      </el-select>
      <el-select
        v-model="currentMonth"
        @change="dateChange"
      >
        <el-option
          v-for="item in 12"
          :key="item"
          :label="item"
          :value="item"
        />
      </el-select>

    </el-row>
    <!-- 日历 -->
    <el-calendar v-model="currentDate">
      <template
        slot="dateCell"
        slot-scope="{date, data}"
      >
        <div class="date-content">
          <span class="text"> {{ data.day | getDay }}</span>
          <span
            v-if="isWeek(date)"
            class="rest"
          >休</span>
        </div>
      </template>
    </el-calendar>

  </div>
</template>

<script>
export default {
  filters: {
    getDay: function (value) {
      // console.log(value)
      const dates = value.split('-')[2]
      return dates
    }
  },
  props: {
    startDate: {
      type: Date,
      default: () => new Date()
    }
  },
  data () {
    return {
      currentMonth: null, // 当前月份
      currentYear: null, // 当前年份
      currentDate: null,
      yearList: []
    }
  },
  created () {
    this.initDate()
  },
  methods: {
    initDate () {
      this.currentMonth = this.startDate.getMonth() + 1
      this.currentYear = this.startDate.getFullYear()
      // 处理年=》前后5年
      this.yearList = Array.from(Array(11), (item, i) => this.currentYear + i - 5)
      this.dateChange()
    },
    // 年月份改变之后
    dateChange () {
      const year = this.currentYear
      const month = this.currentMonth
      this.currentDate = new Date(`${year}-${month}-01`) // 以当前月的1号为起始
    },
    // 是否是休息日
    isWeek (value) {
      return value.getDay() === 6 || value.getDay() === 0
    }
  }
}
</script>

<style lang="scss" scoped>
::v-deep .el-calendar-day {
  height: auto;
}
::v-deep .el-calendar-table__row td,
::v-deep .el-calendar-table tr td:first-child,
::v-deep .el-calendar-table__row td.prev {
  border: none;
}
.date-content {
  height: 40px;
  text-align: center;
  line-height: 40px;
  font-size: 14px;
}
.date-content .rest {
  color: #fff;
  border-radius: 50%;
  background: rgb(250, 124, 77);
  width: 20px;
  height: 20px;
  line-height: 20px;
  display: inline-block;
  font-size: 12px;
  margin-left: 10px;
}
.date-content .text {
  width: 20px;
  height: 20px;
  line-height: 20px;
  display: inline-block;
}
::v-deep .el-calendar-table td.is-selected .text {
  background: #3d6df8;
  color: #fff;
  border-radius: 50%;
}
::v-deep .el-calendar__header {
  display: none;
}
</style>
